Square Geometrical Shaping 128QAM Based Time Domain Hybrid Modulation in Visible Light Communication System

作     者：Peng Zou Yiheng Zhao Fangchen Hu Nan Chi Peng Zou;Yiheng Zhao;Fangchen Hu;Nan Chi

作者机构：Key Laboratory for Information Science of Electromagnetic Waves Fudan University 

出 版 物：《China Communications》 (中国通信（英文版）)

年 卷 期：2020年第17卷第1期

页      面：163-173页

核心收录：

学科分类：08[工学] 0803[工学-光学工程] 

基　　金：Pujiang talent of Shanghai City Shanghai Shu Guang Ministry of Education of the People's Republic of China, MOE 

主　　题：SGS128QAM MPN TDHM nonlinear distortion achievable information rate 

摘      要：We proposed two kinds of visible light communication(VLC)systems which respectively based on 64QAM/square geometrical shaping(SGS)128QAM time domain hybrid modulation scheme(SGSHY)and 64QAM/128QAM time domain hybrid modulation scheme(REGHY).These two systems can operate around specific forward error correction(FEC)threshold and maximize the achievable information rate(AIR)of the *** principles of SGSHY and REGHY are proposed in detail,which has very low computation complexity compared with probabilistic *** SGSHY outperforms REGHY at high peak to peak voltage(Vpp).Experimental results show that at high Vpp like 1.4V,which means the system is suffering from high nonlinear distortion,the AIR of SGSHY outperforms that of REGHY by 0.12Gb/s at the 2×10-2 FEC *** AIR of the REGHY is at most 0.36Gb/s higher than that of 64QAM at 0.8V Vpp and 7%FEC threshold,while the(achievable information rate)AIR of SGSHY is at most 0.40Gb/s higher than that of 64QAM at 1.4V Vpp and 20%FEC threshold.